V4L/DVB (7121): Renames videobuf lock to vb_lock

This helps to identify where vb_lock is being used, and find missusages of the
locks.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 26 insertions, 28 deletions

diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index 907dc62c1783..d9ce9a48ef59 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -2354,8 +2354,8 @@ static int setup_window(struct bttv_fh *fh, struct bttv *btv,
                 BUG();
         }
 
-        mutex_lock(&fh->cap.lock);
-                kfree(fh->ov.clips);
+        mutex_lock(&fh->cap.vb_lock);
+        kfree(fh->ov.clips);
         fh->ov.clips    = clips;
         fh->ov.nclips   = n;
 
@@ -2376,7 +2376,7 @@ static int setup_window(struct bttv_fh *fh, struct bttv *btv,
                 bttv_overlay_risc(btv, &fh->ov, fh->ovfmt, new);
                 retval = bttv_switch_overlay(btv,fh,new);
         }
-        mutex_unlock(&fh->cap.lock);
+        mutex_unlock(&fh->cap.vb_lock);
         return retval;
 }
 
@@ -2576,7 +2576,7 @@ static int bttv_s_fmt_cap(struct file *file, void *priv,
         fmt = format_by_fourcc(f->fmt.pix.pixelformat);
 
         /* update our state informations */
-        mutex_lock(&fh->cap.lock);
+        mutex_lock(&fh->cap.vb_lock);
         fh->fmt              = fmt;
         fh->cap.field        = f->fmt.pix.field;
         fh->cap.last         = V4L2_FIELD_NONE;
@@ -2585,7 +2585,7 @@ static int bttv_s_fmt_cap(struct file *file, void *priv,
         btv->init.fmt        = fmt;
         btv->init.width      = f->fmt.pix.width;
         btv->init.height     = f->fmt.pix.height;
-        mutex_unlock(&fh->cap.lock);
+        mutex_unlock(&fh->cap.vb_lock);
 
         return 0;
 }
@@ -2611,11 +2611,11 @@ static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
         unsigned int i;
         struct bttv_fh *fh = priv;
 
-        mutex_lock(&fh->cap.lock);
+        mutex_lock(&fh->cap.vb_lock);
         retval = videobuf_mmap_setup(&fh->cap, gbuffers, gbufsize,
                                      V4L2_MEMORY_MMAP);
         if (retval < 0) {
-                mutex_unlock(&fh->cap.lock);
+                mutex_unlock(&fh->cap.vb_lock);
                 return retval;
         }
 
@@ -2627,7 +2627,7 @@ static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
         for (i = 0; i < gbuffers; i++)
                 mbuf->offsets[i] = i * gbufsize;
 
-        mutex_unlock(&fh->cap.lock);
+        mutex_unlock(&fh->cap.vb_lock);
         return 0;
 }
 #endif
@@ -2756,7 +2756,7 @@ static int bttv_overlay(struct file *file, void *f, unsigned int on)
         if (!check_alloc_btres(btv, fh, RESOURCE_OVERLAY))
                 return -EBUSY;
 
-        mutex_lock(&fh->cap.lock);
+        mutex_lock(&fh->cap.vb_lock);
         if (on) {
                 fh->ov.tvnorm = btv->tvnorm;
                 new = videobuf_pci_alloc(sizeof(*new));
@@ -2767,7 +2767,7 @@ static int bttv_overlay(struct file *file, void *f, unsigned int on)
 
         /* switch over */
         retval = bttv_switch_overlay(btv, fh, new);
-        mutex_unlock(&fh->cap.lock);
+        mutex_unlock(&fh->cap.vb_lock);
         return retval;
 }
 
@@ -2806,7 +2806,7 @@ static int bttv_s_fbuf(struct file *file, void *f,
         }
 
         /* ok, accept it */
-        mutex_lock(&fh->cap.lock);
+        mutex_lock(&fh->cap.vb_lock);
         btv->fbuf.base       = fb->base;
         btv->fbuf.fmt.width  = fb->fmt.width;
         btv->fbuf.fmt.height = fb->fmt.height;
@@ -2838,7 +2838,7 @@ static int bttv_s_fbuf(struct file *file, void *f,
                         retval = bttv_switch_overlay(btv, fh, new);
                 }
         }
-        mutex_unlock(&fh->cap.lock);
+        mutex_unlock(&fh->cap.vb_lock);
         return retval;
 }
 
@@ -3090,7 +3090,7 @@ static int bttv_s_crop(struct file *file, void *f, struct v4l2_crop *crop)
 
         fh->do_crop = 1;
 
-        mutex_lock(&fh->cap.lock);
+        mutex_lock(&fh->cap.vb_lock);
 
         if (fh->width < c.min_scaled_width) {
                 fh->width = c.min_scaled_width;
@@ -3108,7 +3108,7 @@ static int bttv_s_crop(struct file *file, void *f, struct v4l2_crop *crop)
                 btv->init.height = c.max_scaled_height;
         }
 
-        mutex_unlock(&fh->cap.lock);
+        mutex_unlock(&fh->cap.vb_lock);
 
         return 0;
 }
@@ -3177,30 +3177,25 @@ static unsigned int bttv_poll(struct file *file, poll_table *wait)
                 buf = list_entry(fh->cap.stream.next,struct bttv_buffer,vb.stream);
         } else {
                 /* read() capture */
-                mutex_lock(&fh->cap.lock);
+                mutex_lock(&fh->cap.vb_lock);
                 if (NULL == fh->cap.read_buf) {
                         /* need to capture a new frame */
-                        if (locked_btres(fh->btv,RESOURCE_VIDEO_STREAM)) {
-                                mutex_unlock(&fh->cap.lock);
-                                return POLLERR;
-                        }
+                        if (locked_btres(fh->btv,RESOURCE_VIDEO_STREAM))
+                                goto err;
                         fh->cap.read_buf = videobuf_pci_alloc(fh->cap.msize);
-                        if (NULL == fh->cap.read_buf) {
-                                mutex_unlock(&fh->cap.lock);
-                                return POLLERR;
-                        }
+                        if (NULL == fh->cap.read_buf)
+                                goto err;
                         fh->cap.read_buf->memory = V4L2_MEMORY_USERPTR;
                         field = videobuf_next_field(&fh->cap);
                         if (0 != fh->cap.ops->buf_prepare(&fh->cap,fh->cap.read_buf,field)) {
                                 kfree (fh->cap.read_buf);
                                 fh->cap.read_buf = NULL;
-                                mutex_unlock(&fh->cap.lock);
-                                return POLLERR;
+                                goto err;
                         }
                         fh->cap.ops->buf_queue(&fh->cap,fh->cap.read_buf);
                         fh->cap.read_off = 0;
                 }
-                mutex_unlock(&fh->cap.lock);
+                mutex_unlock(&fh->cap.vb_lock);
                 buf = (struct bttv_buffer*)fh->cap.read_buf;
         }
 
@@ -3209,6 +3204,9 @@ static unsigned int bttv_poll(struct file *file, poll_table *wait)
             buf->vb.state == VIDEOBUF_ERROR)
                 return POLLIN|POLLRDNORM;
         return 0;
+err:
+        mutex_unlock(&fh->cap.vb_lock);
+        return POLLERR;
 }
 
 static int bttv_open(struct inode *inode, struct file *file)
diff --git a/drivers/media/video/bt8xx/bttv-vbi.c b/drivers/media/video/bt8xx/bttv-vbi.c
index 1f0cc79e2a33..75fa82c7c735 100644
--- a/drivers/media/video/bt8xx/bttv-vbi.c
+++ b/drivers/media/video/bt8xx/bttv-vbi.c
@@ -352,13 +352,13 @@ int bttv_s_fmt_vbi(struct file *file, void *f, struct v4l2_format *frt)
            because vbi_fmt.end counts field lines times two. */
         end = max(frt->fmt.vbi.start[0], start1) * 2 + 2;
 
-        mutex_lock(&fh->vbi.lock);
+        mutex_lock(&fh->vbi.vb_lock);
 
         fh->vbi_fmt.fmt    = frt->fmt.vbi;
         fh->vbi_fmt.tvnorm = tvnorm;
         fh->vbi_fmt.end    = end;
 
-        mutex_unlock(&fh->vbi.lock);
+        mutex_unlock(&fh->vbi.vb_lock);
 
         rc = 0;